Print-ready file resolution looks different than the uploaded PDF

Created a 244-page book using InDesign with several grayscale images. Made the PDF using Lulu's PDF preset. The file looks sharp. After Lulu creates the Print-ready file my fonts no longer look sharp. Body text is Adobe Caslon Pro and san-serif text is Myriad Pro. All fonts are embedded in the PDF file.

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Comments

Insert colour photos as they are, 300 dpi, RGB. Print using Do PDF, under properties, high res, embedded fonts. If your book is black and white they will be black and white. The less tampering you do with images the better.